Hayward Power-flo UN series Installation and Operating Instructions

Brand: Hayward

Model: Power-flo UN series

Category: Above ground pool accessories

Type: Installation and Operating Instructions

IS1500UN-98

HAYWARD HIGH PERFORMANCE PUMP

INSTALLATION AND OPERATING INSTRUCTIONS

HAYWARD POOL PRODUCTS, INC.

900 FAIRMOUNT AVENUE, ELIZABETH, NEW JERSEY 07207

Your Hayward centrifugal pump has been quality-built

and engineered to give you efficient, dependable service.

Additionally, it may be equipped with optional union

connectors to make installation and future service easier.

The advanced design permits use of either single or dual

speed motors and reduces operation and maintenance

to simple, common-sense procedures.

GENERAL TIPS ON PUMP INSTALLATION

The Power-Flo UN pump must be installed below

water level. For best pump performance, locate the

system below the pool water line as close to the tub

as possible. Make sure suction joints are tight.

Suction pipe should be as large or larger than

discharge pipe.

Damp, non-ventilated locations should be avoided.

Motors require free circulation of air to aid in cooling.

Insure that the electrical supply available agrees

with the motor’s voltage, phase and cycle, and that

wire size is adequate for the HP (KW) rating and

distance from power source. Motor must always be

properly grounded. If cord is connected, use a

properly grounded outlet. Electrical circuits must be

protected by proper size ground fault circuit

interrupter (GFCI) as required by applicable

electrical codes. All electrical wiring must be

performed by qualified personnel, and must

conform to local codes and regulations.

MAINTENANCE

Hayward pumps have self-lubricating motor

bearing and shaft seals. No lubrication is

necessary.

Keep motor clean. Insure air vents are free from

obstruction.

Occasionally, shaft seals must be replaced, due

to wear or damage. See instructions.

STARTING INSTRUCTIONS

Be sure water can move freely to and from the

pump inlet and outlet. Never operate the pump

without water. Water acts as a coolant and lubricant

for the mechanical shaft seal.

Turn on pump. If pump will not start, see TROUBLE

SHOOTING GUIDE on back page. Refer to tub

manufacturer’s instructions.

NOTE: ANSI/NSPI-4 Article V, standard for

above-ground and on-ground pools, advises

that components such as the filtration system,

pumps and heater be positioned so as to

prevent their being used as a means of access

to the pool by young children.

CAUTION: All suction and discharge lines must

be open when starting the system. Failure to do

so could cause severe personal injury and/or

property damage.

STORAGE/WINTERIZING

Pump and motor must be protected from freezing. If

freezing temperatures are expected, be sure all

water has been drained from tub, piping and pump.

Shut off all electric power at circuit breaker or main

service panel.

FOR REFERENCE ONLY

UN Series pumps have externally threaded inlet and

outlet to accommodate optional union connectors.

REF.

NO.

REQ’D.

MODEL

SP1500UN

SPX1500N2

SPX1501BT

SPX1082Z5B

SPX1500E

SPX1500KA

SPX1501AAT

SPX1500Y2

SPX1500Z1E

----------

SPX1495Z1

SPX1500G

SPX1500JS

SPX1700FG

MODEL

SP1510UN

SPX1500N2

SPX1501BT

SPX1082Z5B

SPX1500F

SPX1500KA

SPX1501AAT

SPX1500Y2

SPX1510Z1E

SPX1510Z2E

SPX1495Z1

SPX1500G

SPX1500JS

SPX1700FG

MODEL

SP1511UN

SPX1500N2

SPX1501BT

SPX1082Z5B

SPX1500L

SPX1500KA

SPX1501AAT

SPX1500Y2

SPX1510Z1XE

SPX1510Z2XE

SPX1495Z1

SPX1500G

SPX1500JS

SPX1700FG

Bolt, No. 10-24 Hex. Head

Housing Cover

Housing O-Ring

Impeller

Seal Assembly

Pump Housing

Nut, No. 10-24 Hex.

Motor - 60 cycle, single phase

Motor - 60 cycle, single phase - 2 speed

Motor-To-Housing Bolt

O-Ring (Optional)

Union Nut (Optional)

Union End Connector, SKT (Optional)

Drain Plug w/Gasket

DESCRIPTION PART NUMBER

To order, specify motor manufacturer, HP and pump model no.

SEAL CHANGE INSTRUCTIONS

SP1500UN SERIES

GENERAL

Exercise extreme care in handling and installing the new seal and ceramic seat assembly.

The lapped and polished surfaces may easily be damaged by dirt or scratching.

For safety, all service must be performed with all power shut off.

Remove pump and motor assembly from piping

system by unscrewing union nuts.

Remove pump housing cover by removing the

seven (7) housing bolts and nuts which fasten

housing cover to pump housing. The impeller is

now exposed.

To remove impeller, insert screwdriver in slot at

end of motor.* Hold screwdriver so as to keep

shaft from turning, and rotate the impeller in a

counterclockwise direction. The spring portion of

the seal assembly is now exposed.

Note carefully the position of the spring seal and

pull it off the impeller.

To remove the stationary (ceramic seat) part of the

seal assembly:

a. Loosen the four (4) motor securing bolts and

disengage the motor from the pump housing.

b. With motor removed, press the clear plastic

and ceramic seat assembly out of the pump

housing recess. If tight, tap lightly from the

“motor” side.

Clean and lubricate the impeller hub shaft and

pump housing seal recess with a dilute solution of

non-granulated liquid-type soap. Gently wipe the

polished face of the new ceramic seat with a soft,

dry cotton cloth.

10.

11.

12.

Press the new spring portion of the assembly onto

the impeller, black polished surface facing away

from the impeller.

Carefully press ceramic seat, with O-ring, into clear

plastic seat retainer—polished surface facing out.

Be sure O-ring is in place on cut ridge of clear

plastic retainer. Press plastic retainer, with ceramic

seat inside, into recess of pump housing—O-ring

end first. Replace the assembly firmly and evenly.

Carefully insert the motor shaft through the seat

assembly, and secure motor to pump housing with

four (4) motor securing bolts. (Be sure motor base

is positioned properly.)

Screw the impeller, with spring seal, onto the motor

shaft, hand tight, by turning clockwise.

Clean fiber gasket (replace if necessary) and fasten

housing cover to pump housing with seven (7) bolts

and nuts. Tighten bolts and nuts alternately and

evenly.

Reconnect pump to piping system. Be sure to fill

strainer with water before restarting.

*For A.O. Smith Motors: Remove motor end cover and

carefully

apply wrench to flat on motor shaft to hold shaft from turning.

ELECTRICAL GUIDE —60 CYCLE MOTORS—SINGLE PHASE

MOTOR

1/2

3/4

VOLTS

115

CIRCUIT BREAKER

RATINGS—AMPS

BRANCH FUSETRON

RATINGS—AMPS

RECOMMENDED

WIRE SIZE

0-50’

No. 14

No. 12

A separate electrical circuit, utilizing a rating as above, is recommended.

KW HP

.37

.55

.75

A. MOTOR WON’T START

1.Check for improper or loose connections, open

switches or relays, blown circuit breakers or fuses.

2.Manually check rotation of motor shaft for free

movement and lack of obstruction.

B. MOTOR CUTS OUT—Check for:

1.Wiring, loose connections, etc.

2.Low voltage at motor (frequently caused by

undersized wiring).

3.Binding and overload. (Amperage reading)

NOTE: Your Hayward pump motor is equipped with

Automatic Thermal Overload Protection. The

motor will automatically shut off, under normal

conditions, before heat damage build-up, due

to an improper operating condition, can occur.

The motor will auto-restart when safer heat

level is reached.

C. MOTOR HUMS, BUT DOES NOT START—

Check for:

1.Centrifugal switch stuck in open position.

2.Binding of motor shaft.

D. PUMP WON’T PRIME

1.Make sure pump/strainer housing is filled with

water.

2.Make sure all suction and discharge lines and

valves are open and unobstructed, and that pool

water level is above all suction openings.

3.Block off suction as close to pump as possible and

determine if pump will develop a vacuum.

a. If pump develops a vacuum, check for blocked

suction line or strainer, or air leak in suction

piping.

b. If pump does not develop a vacuum and pump

has sufficient “priming water”:

(1) Tighten all bolts and fittings.

(2) Check voltage to make sure pump is up to

speed.

(3) Open pump and check for clogging or

obstruction.

(4) Remove and replace shaft seal.

E. LOW FLOW—Generally check for:

1.Clogged or restricted suction line; undersized

pool piping.

2.Plugged or restricted discharge line.

3.Air leak in suction (bubbles issuing from return

fittings).

4.Pump operating underspeed (low voltage).

5.Plugged or restricted impeller.

6. If dual speed pump, check Hi/Lo switch

sequencing.

F. NOISY PUMP—Check for:

1.Air leak in suction causing rumbling in pump.

2.Cavitation due to restricted or undersized suction

line and unrestricted discharge lines. Correct

suction condition or throttle discharge lines, if

practical.

3.Vibration due to improper mounting, etc.

4.Foreign matter in pump housing.

5.Motor bearings made unserviceable by wear, rust,

or continual overheating.

TROUBLE SHOOTING GUIDE

SERVICE & REPAIRS

Consult your local Hayward dealer or service center.

No pumps or motors may be returned directly to the factory without the expressed

written authorization of Hayward Pool Products, Inc.

Hayward Power-flo UN series Installation and Operating Instructions

Brand: Hayward

Model: Power-flo UN series

Category: Above ground pool accessories

Type: Installation and Operating Instructions

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Hayward Power-flo UN series Installation and Operating Instructions

Hayward Power-flo UN series Installation and Operating Instructions

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